When will fruit trees not grow insects?

Before flowering, before the fruit tree blooms, it is necessary to take fruit preservation medicine, which can improve the probability of fruit setting, increase the yield of fruit trees, and reduce the chance of fruit drop. The type of agent can be a growth regulator, which can regulate the growth of the fruit, the main ones are gibberellin, naphthalene acetic acid, etc., and the concentration does not need to be too high. In addition to the use of growth regulators, it is also necessary to supplement trace elements, the most important of which is boron, which can effectively promote the germination of pollen, help to complete fertilization, and can also be mixed with sugar.

2. After the flowers fall, in the 7-10 days after the flowers wither, it is necessary to inject a pesticide to prevent pests and diseases to reduce pests and diseases.

Fruit trees can be sprayed in sunny and windless weather, and it is not advisable to spray at noon, because the light at noon is strong, the temperature is high, the pests will hide in the backlight, and the amount of activity will be reduced, and the high temperature will also cause the effect to be decomposed, in addition, due to the rapid volatilization of the effect at noon, it is easy to cause poisoning of humans and animals.

1. Yacon.

Yacon, like sweet potatoes and potatoes, grows in the soil and cannot be attacked by insects. This is also the self-protection mechanism that root plants have formed over a long period of evolution.

2. Walnuts. The walnut flesh is protected by a hard shell on the outside, and there is a thick skin on the outside of the shell, so the insects can't eat at all. Some people may say that chestnuts not only have hard shells, but also thorns?

Why aren't chestnuts? Friends who are familiar with chestnuts should know that when chestnuts are almost ripe, the appearance will crack, and when they are not ripe, the shell is soft, so insects are easy to attack.

3. Early ripening peaches. Peaches are very susceptible to worms. Because, it is so delicious, the bugs have been eyeing it for a long time. However, if it is an early-maturing variety and matures in May, the insects have not grown up and cannot be eaten, so there is no need to use pesticides.

Fourth, apricots. Apricots are the first fruit to hit the market in the summer. Due to early maturation, there is also less infestation from insects.

5. Cherries. Cherries ripen in late April, earlier than apricots. In general, there is no need to inject medicine.

Although these fruits have fewer insect pests, it is not excluded that other producers are artificially added during the planting process or preservatives are added during transportation, so more attention should be paid to the selection process.

Hello, the first one is yacon, which is a delicious fruit. Like tomatoes, yacon can be eaten as it can be eaten or used in cooking. Many people eat pear fruits and like to stir-fry meat with yacon, cook hot pot, pork ribs, etc.

Not only can yacon be cooked, but it can also be used to make snacks such as preserved fruits, jellies, and canned food, which is a versatile food. The yacon leaves and petals can be used to make tea, while its stems can be used as fodder. Yacon is different from common fruits in that it grows mainly in the soil, just like peanuts and potatoes.

Therefore, the insect cannot eat fruit at all, so it does not destroy the growth of the fruit and naturally does not need pesticides.

The second type is walnuts, and we often hear commercials on TV saying, "Always drink six walnuts with your brain". Walnut milk is mainly made from walnuts. Walnuts have high nutritional value and are known as the world-famous "four dried fruits" along with almonds, cashews and hazelnuts.

It is rich in protein and fat, and also contains many essential trace elements and minerals such as calcium, phosphorus, and iron, which are beneficial for human health. Many people don't know that walnuts grow in. In fact, walnuts mainly grow on trees, but because the shell of walnuts is too hard for insects to get in, walnuts do not need pesticides, and they can grow healthily.

It's impossible, the fruit is for the worm to eat, and then spread the seed to a distant land.

Hope, thank you.

If this kind of fruit tree, in my memory, this kind of fig is not better, few people have applied medicine, and I have never seen him grow insects.

As far as I know, fig trees don't need to be sprayed, and they don't have bugs, except for Fig, which told me, some other fruit trees seem to have bugs.

In my cognition, it seems that there is no, because all fruit trees will bear fruit, and the fruit is sweet, so it will attract insects, even if it is a fruit tree like figs, which is difficult to produce insects, it will also attract ants during the fruiting period, and it is inevitable that this is.

Summary. 1. Temperature: pests and diseases are more active in 20-30 hours, high temperature in summer, spraying before 10 o'clock in the morning or after 4 o'clock in the afternoon; When the temperature is low in spring and autumn, the medicine is sprayed at noon.

2. Fruit tree growth: before the fruit tree blooms, the fruit preservation drug is used to improve the fruit setting rate and increase the yield of the fruit tree; One week after flowering, it is necessary to inject pesticides to prevent pests and diseases to reduce the possibility of pests and diseases; During the period when the fruit is enlarged, you can spray it once, which can make the fruit pedicle thicker and increase the amount of nutrient transport.

When to apply pesticides to prevent and control the insects in the fruit.

It is necessary to apply medicine when the fruit tree germinates so that there are no insects.

1. Temperature: pests and diseases are more active in 20-30 hours, high temperature in summer, before 10 o'clock in the morning or 4 o'clock in the afternoon, spraying next to the mu; When the temperature is low in spring and autumn, the medicine is sprayed at noon. 2. Fruit tree growth

Before the fruit tree blooms, the fruit preservation medicine is used to improve the fruit setting rate and increase the yield of the fruit tree; After flowering, it is necessary to inject pesticides to prevent pests and diseases around the bend of the tomb to reduce the possibility of pests and diseases; During the period when the fruit is enlarged, you can spray it once, which can make the fruit pedicle thicker and increase the amount of nutrient transport.

It is best to spray pesticides on the fruit when the fruit is fruiting.

Spraying pesticides when the fruit is fruiting, and then spraying pesticides when the fruit is swollen can prevent the fruit from being insected. Fruit tree spraying is not too many times, the key is to hit accurately, and to use medicine in the critical period of disease prevention and control. However, the breeding of germs in spring, the sting of pests is directly affected by the temperature, and after the sting, when the temperature stabilizes above 18, it is the best time to use medicine.

For example, stone sulfur mixture, insecticide, bactericide and so on.

The temperature is low, there is no activity of pests and diseases, it is difficult for the medicinal properties to play a role, and the control effect is also greatly discounted. In the spring, we must grasp the best time to spray. Most of the germs and eggs overwinter in the dead branches and leaves, diseased fruits, and dead fruits, and it is important to clear these things out of the orchard.

However, most growers do not pay enough attention to this, and very few can seriously clean the orchard floor.

Maintenance of fruit trees

Where possible, it is best to use water-saving irrigation, such as drip irrigation and sprinkler irrigation. It can not only save water, but also make the soil water content appropriate, so that the root system can grow well. Intensive summer pruning is also a good way to combat drought and heat.

Thin out the strong branches, long branches, and competing branches on the back of the tree. Increase the amount of pruning appropriately, and use Xiaobi Hall to ensure ventilation and light transmission inside the canopy to reduce the consumption of water and nutrients.

Cutting off unripe shoots and excessive foliage, as well as scorched leaves and sunburn-heavy fruits, can also reduce water evaporation and transpiration. The continuous high temperature and drought have created conditions for the occurrence of mites and aphids, and should be prevented and controlled in time to avoid insect outbreaks. At the same time, the disease can not be taken lightly, under this kind of weather, fruit tree powdery mildew, rot disease and other diseases are prone to occur, to find the rational use of drugs in time.

Fruit tree pest control needs to vary from fruit to fruit, and different fruit tree varieties and different pest types need to be treated at different times. In general, the following points can be used as a reference:

Regular inspections: Regular inspections are required during the growth and development of fruit trees to find pest problems in a timely manner. For the pest problems that have been discovered, corresponding control measures should be developed as soon as possible.

Weather conditions: Weather bars are also an important factor in preventing pests and pests in fruit trees. Generally speaking, in Hyochong, the number of insect infestations may increase during the dry, warm season. At this time, you should pay attention to insect pest control and try to avoid spraying pesticides under conditions such as high temperatures, strong winds or rain.

Control cycle: Fruit tree pest control needs to follow the control cycle, and choose the appropriate control method according to the life cycle of the pest. For example, insect borer pests need to be sprayed during the hatching period of their eggs; Citrus pests need to be sprayed before flowering to avoid affecting fruit formation, etc.

Occurrence of pests and diseases: Fruit tree pest control also needs to be selected according to the occurrence of local pests and diseases. For example, there may be more serious aphids or borers in some areas, and corresponding prevention and control measures need to be taken before they appear.

Note: Fruit tree pest control needs to be combined with the actual local situation and the characteristics of fruit tree varieties, and it is necessary to pay attention to the safe use of pesticides to avoid harm to the environment and human body.